Styryl compounds,processes for their manufacture and their use
Abstract
Abstract THE INVENTION PROVIDES NEW FLUORESCENT COMPOUNDS OF THE FORMULA 4,4''-BIS((2-R1,3-R2,4-R3,5-R4-PHENYL)-CH=CH-)-BIPHENYL WHEREIN EITHER (A) ONE, TWO OR THREE OF THE SUMBOLS R1, R2, R3 OR R4 REPRESENT HALOGEN ATOMS OF THE GROUP FLUORINE, CHLORINE OF BROMINE, HYDROGEN, OR DENOTE HYDROGEN, OR (B) ONE OR TWO OF THE SYMBOLS, R1, R2, R3, R4 REPRESENT A HALOGEN ATOM OF THE GROUP FLUORINE, CHLORINE OR BROMINE, WHILST ANOTHER OF THE SYMBOLS R1, R2, R3 OR R4 DENOTES AN ALKYL GROUP WITH 1 TO 4 CARBON ATOMS OR AN ALKOXY GROUP WITH 1 TO 4 CARBON ATOMS, OR TWO OF THE SYMBOLS MENTIONED TOGETHER REPRESENT A METHYLENE DIOXY GROUP, AND THE REMAINING SYMBOLS DENOTE HYDROGEN. THE DEFINED COMPOUNDS AR VALUABLE OPTICAL BRIGHTENING AGENTS ESPECIALLY FOR POLYAMIDES POLYVINYL CHLORIDE AND POLYSTYRENE.
Inventors
- 👤 K Weber
- 👤 C Luethi
Bibliographic Details
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